Senior Frontend Engineer On-Site

Soldera; Mission (KS); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Significant equity package

Competitive senior salary

Freedom and Responsibility

Job summary

Soldera, located in Mission, Kansas, is seeking a Senior Engineer with expertise in AI-native technologies to develop autonomous infrastructure for renewable energy. You will work with a small team to design AI-driven trading systems and unstructured data pipelines using TypeScript and Python. The role offers significant equity and the opportunity to impact Europe's transition to renewable energy while enjoying autonomy in a dynamic work environment.

Qualifications

• 5+ years of shipping production software in TypeScript, Node.js, Python, PostgreSQL.
• Experience with AI implementation and prompt engineering skills.
• Understanding of product business goals and technical solutions.
• Fluency in AI coding tools and platforms.
• Ability to solve problems actively in a small team.

Responsibilities

• Design and ship AI agents for autonomous trading.
• Build resilient data pipelines from varied data sources.
• Architect the Metalayer API for global asset management.
• Collaborate with founders to prototype and ship features.

Skills

Product-First Mindset

AI Implementation Experience

Senior Engineering Chops

Tooling Obsessed

High Agency

Tools

TypeScript

Node.js

Python

PostgreSQL

OpenAI API

LangChain

Docker

Terraform

Job description

Soldera is the "Stripe for Renewable Energy." We are an AI-native metalayer automatingthe fragmented, €13B European renewable energy certificate market.

The Traction:In 2025, we executed a breakout year: revenue scaled from €13k to €1M with consistent 30% MoMgrowth. We are backed by Lifeline Ventures, Lemonade Stand, and a fresh€1.6M deep-tech grantto unify Europe's energy registries. We serve Fortune 500s and manage 4,000+ power plants.

The Mission:We are not just building a dashboard. We are building theautonomous infrastructurethat buys, sells, and retires green energy certificates across 30+ disconnected nationalregistries. We need a Senior Engineer who combines product intuition with deep AI engineeringskills to build the "brain" that makes this happen.

The Role: AI-Native Engineering

We believe the future of software engineering isAI-augmented. We care about how fast you can ship reliable, scalable value by leveraging AI.

If you are a purist who refuses to use Copilot or Cursor, this role is not for you.If you are apragmatic builder who uses LLMs to multiply your output by 10x, welcome home.

What You Will Build:

• Autonomous Trading Agents:Design and ship AI agents that navigate legacy government portals (some typically requireExcel/Email) to execute trades autonomously.
• Unstructured Data Pipelines:Build resilient systems that ingest messy data (PDFs, scanned docs, varied API formats) from 30+countries and normalize it into a pristine global standard using LLMs and OCR.
• The Metalayer API:Architect the single API that allows a global asset manager to trade in 15 regions instantly.
• Product Velocity:Work directly with the founders to prototype, ship, and iterate on features weekly.

What We Need

• Senior Engineering Chops:5+ years of shipping production software (TypeScript, Node.js, Python, PostgreSQL). You know howto structure a codebase that survives scaling.
• AI Implementation Experience:You have moved beyond "calling the OpenAI API." You understand RAG, structuredoutputs, agentic workflows (LangChain/LangGraph), and prompt engineering as a discipline.
• Product-First Mindset:You don't wait for a ticket. You understand the business goal (e.g., "reduce onboardingtime by 50%") and you figure out the technical solution.
• Tooling Obsessed:You are fluent in AI coding tools (Cursor, GitHub Copilot, v0, etc.). You view coding as"architecting logic," not typing syntax.
• High Agency:We are a small, elite team of 11. There is no bureaucracy. You see a problem, you fix it.

The Tech Stack

• Core:TypeScript, Python, Vue, Flask
• AI/Data:OpenAI/Anthropic APIs/Gemini, LangChain, Vector Databases
• Infrastructure:AWS/GCP, Docker, Terraform

Why Join Soldera?

• The "PayPal Mafia" Effect:Work alongside ex-Bolt, Wise, LHV, and Sixfold talent. We are building the next Estonianunicorn, and the early team is the most critical.
• Freedom & Responsibility:We don't track hours. We track shipping. You have the autonomy to choose the best tools for thejob.
• Significant Upside:We offer a competitive senior salary and asignificant equity package. We are capturing an $80B market; your options are designed to be life-changing.
• Impact:You are literally building the digital infrastructure that accelerates Europe’s transition torenewable energy and increases energy security.